Digestive System Surgical ProceduresDigestive System NeoplasmsDigestive System DiseasesDigestive SystemDigestive System and Oral Physiological PhenomenaDigestive System Physiological PhenomenaDigestive System ProcessesDigestive System FistulaGastrointestinal TractClemastineSurgical Procedures, OperativeGastrointestinal NeoplasmsDigestive System AbnormalitiesDiagnostic Techniques, Digestive SystemGastrointestinal DiseasesIntestinesPancreasStomachLarvaTime FactorsPostoperative ComplicationsTreatment OutcomeSurgical Procedures, MinorTissue DistributionRetrospective StudiesSurgical Procedures, Minimally InvasiveRisk FactorsAmbulatory Surgical ProceduresCause of DeathVascular Surgical ProceduresStomach NeoplasmsCardiac Surgical ProceduresNeoplasmsOral Surgical ProceduresMolecular Sequence DataEndoscopy, Digestive SystemSurgical Procedures, ElectiveReconstructive Surgical ProceduresLiver NeoplasmsGynecologic Surgical ProceduresChinaUrologic Surgical ProceduresAsian Continental Ancestry GroupFollow-Up StudiesOtorhinolaryngologic Surgical ProceduresPhylogenyCardiovascular Surgical ProceduresOphthalmologic Surgical ProceduresObstetric Surgical ProceduresGenetic Predisposition to DiseaseThoracic Surgical ProceduresProspective StudiesOrthopedic ProceduresLaparoscopyNeurosurgical ProceduresReoperationPreoperative CareGeneral SurgeryPolymorphism, GeneticIntraoperative ComplicationsDigestionNational Institute of Diabetes and Digestive and Kidney Diseases (U.S.)MethodsDermatologic Surgical ProceduresOperating Rooms